with virtually the same information the fbi was given six months earlier, that the russians believe tamerlan tsarnaev was a radical islamist. they were told that at the cia's request that he was entered into a government database of known and suspected terrorists. >> reporter: a new intelligence bulletin reviewed by fox news concludes based on new forensic analysis that the boston bombs from remote controlled toy cars. the fbi and homeland security bulletin reads in part, quote, each device likely incorporate an electric fusing system using components from remote control toy cars such as a transmitter and speed control and an electronic speed control. mike mccall is regularly briefed on the investigation. >> this transmitter that was used out of a toy car, that's a very sophisticated pressure cooker bomb that you don't see every day. and so i personally, my judgment is they had training performed by either an individual or individuals who are still at large. >> reporter: throughout the day in boston where the vice president attended a service for the m.i.t. police officer shot dead during la